Question

What immunological role does sweat play?

Answer 1

The sweat contains high concentration of salts and is alkaline in nature. The high concentration of salts prevent microbial growth. The alkaline nature of sweat results in high pH and microbes may not tolerate that pH and hence microbes cannot grow. Sweat also contains lysozyme enzyme and the enzyme destructs the bacterial cells. Sweat also contains IgA antibodies that destruct the microbes. Sweat acts as a physical barrier for the growth of microbes.

Thus, the sweat plays an immunological role by preventing the microbial growth.